Air pollution exposure is associated with adverse health effects across the life-course. Children and adolescents are particularly vulnerable, with harms including increased risk of pre-term birth, pre-school wheeze, stunted lung growth, delayed cognitive development, new onset asthma, asthma attacks, and major mental health problems in adolescents.
Children’s Health in London and Luton (CHILL) is an NIHR-funded cohort study evaluating the impact of London’s Ultra Low Emission Zone (ULEZ) on children’s respiratory health. With additional funding from ARC North Thames and Barts Charity, we are adding outcomes, including physical activity and obesity, and cognitive development.
This study builds on CHILL by collecting physical activity (by accelerometer) and travel patterns (by GPs) in the 3,300 children taking part. We test the hypothesis that a city-wide environmental intervention improving air quality and reducing traffic flows will improve children’s physical activity and reduce rates of obesity.